1 package com.android.contacts.interactions;
2 
3 import android.graphics.Point;
4 
5 /**
6  * Singleton class to keep track of where the user last touched the screen.
7  *
8  * Used to pass on to the InCallUI for animation.
9  */
10 public class TouchPointManager {
11     public static final String TOUCH_POINT = "touchPoint";
12 
13     private static TouchPointManager sInstance = new TouchPointManager();
14 
15     private Point mPoint = new Point();
16 
17     /**
18      * Private constructor.  Instance should only be acquired through getInstance().
19      */
TouchPointManager()20     private TouchPointManager() {
21     }
22 
getInstance()23     public static TouchPointManager getInstance() {
24         return sInstance;
25     }
26 
getPoint()27     public Point getPoint() {
28         return mPoint;
29     }
30 
setPoint(int x, int y)31     public void setPoint(int x, int y) {
32         mPoint.set(x, y);
33     }
34 
35     /**
36      * When a point is initialized, its value is (0,0). Since it is highly unlikely a user will
37      * touch at that exact point, if the point in TouchPointManager is (0,0), it is safe to assume
38      * that the TouchPointManager has not yet collected a touch.
39      *
40      * @return True if there is a valid point saved. Define a valid point as any point that is
41      * not (0,0).
42      */
hasValidPoint()43     public boolean hasValidPoint() {
44         return mPoint.x != 0 || mPoint.y != 0;
45     }
46 }
47